for each in "FishC":
    print(each)

i = 0
while i < len("FishC") :
    print("FishC"[i])
    i += 1

print()

for i in range(11):
    print(i)
print()

for i in range(10, 21):
    print(i)
print()


for i in range(0, 11, 2):
    print(i)
print()

sum = 0
for i in range(1000001) :
    sum += i
print(sum)
